a:7:{i:0;s:2:"id";i:1;s:3:"bid";i:2;s:5:"title";i:3;s:5:"place";i:4;s:7:"addtime";s:3:"_pk";s:2:"id";s:5:"_type";a:5:{s:2:"id";s:16:"int(10) unsigned";s:3:"bid";s:16:"int(10) unsigned";s:5:"title";s:11:"varchar(30)";s:5:"place";s:7:"char(3)";s:7:"addtime";s:16:"int(10) unsigned";}}